USB-C PD Cable Split for Power Delivery and HDMI Video
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Solution Overview
Problem
Cinematography equipment often requires multiple cables for power, data, and video transmission, which is cumbersome and costly, and existing USB-C PD ports do not efficiently support a wide range of voltage requirements.
Innovation Solution
A multifunctional USB-C PD connection system that integrates power, data, and video transmission through a single port, utilizing a control circuit to negotiate and deliver various voltages (5v to 48v) and support HDMI connectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If multiple separate cables are used for power, data, and video transmission, then each function can be reliably transmitted, but the system becomes complex and requires more cables
Solution Approach 1:
The patent combines power transmission, data transmission, and video transmission into a single USB-C PD connection. The USB-C connector integrates multiple conductors that can simultaneously carry power at various voltages (5V, 9V, 12V, 15V, 20V, 28V, 36V, 48V), data signals, and video signals, eliminating the need for separate cables for each function.
Solution Approach 2:
The USB-C PD port is designed to perform multiple functions through a single connection. It can negotiate and deliver different voltage levels to support various power requirements, while also providing data communication and video output capabilities, making it a universal interface for cinematography equipment.
2Device complexity
If a single USB-C PD port is used for multiple functions, then cable count is reduced, but voltage negotiation and compatibility become more complex
Solution Approach 1:
The USB-C PD implementation allows dynamic changing of voltage parameters based on the connected device's requirements. The system can negotiate and switch between multiple voltage levels (5V, 9V, 12V, 15V, 20V, 28V, 36V, 48V) through the same physical connection, adapting to different power needs of various accessories without requiring separate cables for each voltage level.
3Power
If higher voltage power delivery is implemented, then power capacity is increased, but compatibility with existing lower voltage accessories is reduced
Solution Approach 1:
The power delivery system is designed to be dynamic rather than static. The USB-C PD port can actively negotiate the appropriate voltage level with each connected accessory, switching between higher voltages (28V, 36V, 48V) for high-power devices and lower voltages (5V, 9V, 12V) for legacy or low-power accessories, ensuring both high power capacity and broad compatibility.
Data Source
AI summary
A system for transferring power and date from a USB-C PD connection includes a USB-C power delivery (PD) port and a cable. The USB-C PD port is configured to provide an output voltage. The cable includes a first end and a second end. The first end of the cable includes a first branch having a USB-C connector and a second branch having an HDMI connector. The USB-C connector is configured to provide a power output to a device engaged therewith. The HDMI connector is configured to provide a video output to a device engaged therewith. The second end of the cable configured for connection with the USB-C PD port.