Resources Contact Us Home
Speed detection apparatus for camera

Image Number 17 for United States Patent #5136148.

A speed detection apparatus includes a projection unit for repetitively projecting a pulse beam toward an object. A light-receiving unit is arranged to be separated from the projection unit by a base length, receives the pulse beam reflected by the object, and generates an output according to the light-receiving position. A distance calculation unit calculates a distance signal according to a distance to the object upon reception of an output from the light-receiving unit. An integration circuit integrates the distance signal every time the pulse beam is projected. A speed calculation unit calculates a moving speed of the object on the basis of an output from the integration circuit.

  Recently Added Patents
Method and system for facilitating micropayments in a financial transaction system
Wireless refrigerant scale platform
Solid state lighting circuit and controls
Methods and systems for automatically identifying a logical circuit failure in a data network
Display screen with graphical user interface
Fire detector
Synchronous rectifier network unit circuit and method
  Randomly Featured Patents
Deicing solution
Knee pad assembly having an upper pad and a lower pad separately connected to the upper pad to avoid movement impedence to the patella
Forms automation system implementation
Automatic water-spray fertilizing apparatus
Method of coating glass or ceramics with a colored frit
Fuel line filter
Graphics card and heat dissipation method thereof
Substituted hydroxy pyridones
Current command type PWM inverter apparatus for driving and controlling three-phase motor based on periodical state updating timings
Method and apparatus for making compressed composite bodies of plant particles and binder