作者: Siang Leong Foo , Chee Foo Lum , Weng Fei Wong
DOI:
关键词: Communication channel 、 Signal 、 Code (cryptography) 、 Track (disk drive) 、 Ray 、 Detector 、 Encoder 、 Optics 、 Engineering 、 Common emitter
摘要: A user navigational apparatus. The apparatus includes a code wheel and an encoder. is coupled to dial. track of alternating reflective non-reflective sections. optical encoder emitter detector. generates light signal incident on the wheel. detector detects reflected signal. corresponds portion that off sections track. also channel corresponding Embodiments this type achieve reduced thickness compared conventional implementations jog wheels.