172864 ⎘
Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves; Systems determining the position data of a target; Systems for measuring distance only using transmission of interrupted, pulse-modulated waves wherein a voltage or current pulse is initiated and terminated in accordance respectively with the pulse transmission and echo reception
Object detection apparatus
#2Methods and apparatus to detect proximity of objects to computing devices using near ultrasonic sound waves
#3Resonant acoustic structure for measuring well or borehole depth
#4Wideband sonar receiver and sonar signal processing algorithms
#5Distance measuring device and distance measuring method
#6Circuit device, physical quantity measurement device, electronic apparatus, and vehicle
#7Wideband sonar receiver and sonar signal processing algorithms
#8Measurement of reflected ultrasound signal for ultrasonic emitter gating control
#9Apparatus and method for Determining Presence of Objects in a Vehicle