HMD Signal Re-Driving Layout for Lighter Head-Mounted Wear
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Solution Overview
Problem
Existing head-mounted displays (HMDs) suffer from excessive weight due to combined components, causing user discomfort and reduced usability over time.
Innovation Solution
The components of HMDs are distributed across separate hardware structures, with re-driving circuits and controllers evaluating transmission quality to maintain signal integrity and switch between wired and wireless transmission, reducing the weight on the user's head.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If various components (motherboards, batteries, screens, processors) are combined together on the same hardware structure in HMDs, then the functional integration is improved, but the weight on the user's head becomes excessively heavy
Solution Approach 1:
The patent divides the HMD system into separate hardware structures: a first hardware structure containing the display device and a second hardware structure containing the arithmetic processing device. This segmentation allows the heavy processing components to be separated from the head-mounted display unit, reducing the weight on the user's head while maintaining functional integration through wireless or wired connections.
2Weight of moving object
If components are separated into different hardware structures, then the weight on the user's head is reduced, but the transmission signal quality may deteriorate
Solution Approach 1:
The patent implements a feedback mechanism where the arithmetic processing device evaluates the transmission quality of signals transmitted through the transmission interface. Based on this evaluation, the system automatically adjusts transmission parameters or re-drives the transmission signal to maintain signal quality. This closed-loop feedback ensures that separating components into different hardware structures does not compromise transmission reliability.
3Reliability
If the processor evaluates transmission quality and controls re-driving circuit, then the signal transmission reliability is improved, but the device complexity increases
Solution Approach 1:
The patent combines the re-driving circuit with the existing transmission interface hardware structure. The re-driving circuit is integrated into the second hardware structure along with the arithmetic processing device, sharing common components and circuitry. This merging approach minimizes additional complexity while achieving improved signal transmission reliability through intelligent control and signal re-driving capabilities.
Data Source
AI summary
An arithmetic processing device, an imaging device, and a head mounted system are provided. The arithmetic processing device includes a first circuit board, a processor, and a first re-driving circuit. The first circuit board has a first transmission interface. The processor is installed on the first circuit board and configured to evaluate transmission quality of a transmission signal transmitted through the first transmission interface. The first re-driving circuit is installed on the first circuit board and coupled between the processor and the first transmission interface. The processor transmits a first control signal to the first re-driving circuit according to the evaluated transmission quality of the transmission signal to control the first re-driving circuit to re-drive the transmission signal.