Signal Passing Structure for VR Headset Line-of-Sight
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Solution Overview
Problem
In simulated environment systems, such as virtual and augmented reality, communications between head-mounted displays (HMDs) and base stations often experience interruptions due to potential blind areas created by user movement or rotation, leading to unstable signal transmissions.
Innovation Solution
A communication system comprising a first signal transceiver, a second signal transceiver, and a signal passing structure that adjusts the transmission path to ensure the radio frequency signals are not entirely shaded by blind areas, maintaining a line-of-sight between the signal passing structure and the first signal transceiver.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If phased array antennas, grouped phased array antennas, or switch antennas are arranged on the HMDs to achieve multi-directional beamforming, then the communication coverage is improved, but potential blind areas are generated that cannot receive signals correctly when the user moves or rotates, leading to communication interruptions
Solution Approach 1:
A signal passing structure (external antenna or relay device) is introduced as an intermediary to receive signals from the base station and transmit them to the HMD. This mediator bypasses the blind areas created by the HMD's own antenna system, ensuring continuous signal reception regardless of user movement or rotation.
Solution Approach 2:
The signal transmission path is extended from a single-point HMD antenna to a distributed system involving an external signal passing structure. By adding spatial dimensions to the antenna system (placing antennas on external structures rather than just on the HMD), the system achieves coverage in previously blind directions.
2Device complexity
If the HMD and base station communicate via wireless transmission with fixed antenna positions, then the device complexity is reduced, but the communication is interrupted when blind areas block the signal path
Solution Approach 1:
The system transitions from static HMD-mounted antennas to a dynamic configuration where the signal passing structure can be positioned or oriented to maintain optimal signal paths. The transmission path adapts to user movement by utilizing the external structure's position rather than relying on fixed HMD antenna orientations.
3Reliability
If the transmission path is adjusted to guide radio frequency signals around blind areas, then the line-of-sight is maintained and signal stability is improved, but the device complexity increases due to the signal passing structure
Solution Approach 1:
The signal passing structure serves multiple functions: it acts as an external antenna for receiving base station signals, provides a stable transmission path that bypasses blind areas, and can function as a relay for bidirectional communication. This multi-functionality justifies the added complexity by delivering significant reliability improvements.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration reduces the likelihood of disconnections and provides stable signal transmissions by ensuring a line-of-sight path, thereby maintaining continuous communication.
Implementation Method 1
The transmission path is not entirely shaded by the potential signal blind area such that the signal passing structure and the first signal transceiver are on line-of-sight
Data Source
AI summary
Present disclosure relates to a communication system including a first signal transceiver, a second signal transceiver and a signal delivery structure. The second signal transceiver has a potential signal blind area. The second signal transceiver is configured to transmit at least one radio frequency signal. The signal delivery structure is coupled to the second signal transceiver. The signal delivery structure is configured to adjust a transmission path from the signal delivery structure to the first signal transceiver, in order to guide the at least one radio frequency signal to the first signal transceiver via the transmission path. The transmission path is not shaded by the potential signal blind area so that the signal delivery structure and the first signal transceiver are on line-of-sight.