AI 中文总结
针对日常AR场景中手持控制器笨重的问题，提出基于NFC感应耦合的双手指环控制器picoRing dual，实现约1.4 kbps快速手指输入，指环侧功耗0.86 mW，续航约100小时。
AI 中文摘要
智能眼镜（如AR眼镜和头戴式显示器）的进步将数字信息带入户外和公共场合。然而，传统的手持控制器用于手部交互时，在这些日常场景中显得过于笨重且社交上尴尬，无法满足移动使用所需的便携性和隐蔽性。基于指环的输入控制器提供了一种可靠的指感解决方案；然而，在微小且受电池限制的指环上持续运行仍然具有挑战性。在此，我们提出picoRing dual，一种基于感应耦合的超低功耗双手接口，由一对指环-腕带组成。与仅限于单手的每秒数十比特慢速轨迹球交互的原始picoRing鼠标不同，picoRing dual利用稳定的基于NFC的指环到腕带链路，以约1.4 kbps的速度捕捉快速食指运动和拇指对食指的微手势。通过调整指环的线圈几何形状，我们的系统在符合NFC超低功耗特性的同时，实现了对手指弯曲的稳定NFC。因此，指环侧功耗约0.86 mW的picoRing dual，在指环20 mAh电池单次充电下可持续约100小时。picoRing dual有潜力为日常AR交互提供无处不在的手指输入。
英文摘要
Advances in smart eyewear, such as AR glasses and HMDs, bring digital information into outdoor and public situations. However, traditional handheld controllers for hand interactions remain too bulky and socially awkward for these everyday contexts, failing to match the portability and subtlety required for mobile use. Ring-based input controllers offer a reliable finger-sensing solution; however, continuous operation with a tiny, battery-constrained ring remains challenging. Here, we present picoRing dual, an ultra-low-power bimanual interface with a pair of ring-wristbands based on inductive coupling. Unlike the original picoRing mouse limited to uni-manual tens of bps slow trackball interaction, picoRing dual uses a stable NFC-based ring-to-wristband link to capture fast index-finger motions and thumb-to-index microgestures at approximately 1.4 kbps. By tuning the ring's coil geometry, our system achieves stable NFC against finger bending while complying with NFC's ultra-low power profile. Therefore, picoRing dual with approximately 0.86 mW on the ring side can last approximately 100 continuous hours on a single charge of the ring's 20 mAh battery. picoRing dual has the potential to offer ubiquitous finger input for everyday AR interaction.
