Resources Contact Us Home
A/D conversion apparatus

Image Number 13 for United States Patent #7663520.

An A/D conversion apparatus performs motor current detection in an A/D conversion period corresponding to two phases out of three phases of a sinusoidal drive motor, using reduced register resources while minimizing the number of A/D converters. The A/D conversion apparatus includes: a selection unit selecting one of a plurality of input channels; an A/D converter converting an analog signal from the selected input channel to a digital signal; a start register holding a start channel number of sequential conversion; an end register holding an end channel number of the sequential conversion; a prohibition information holding unit holding prohibition information indicating an input channel to be excluded from the sequential conversion; and a control unit causing the selection unit to select, in channel number order, input channels corresponding to channel numbers from the start channel number to the end channel number except the input channel indicated by the prohibition information.

  Recently Added Patents
Enhanced scavenging of residual fluorine radicals using silicon coating on process chamber walls
Digital broadcast receiver and a method for providing a graphical user interface
Method and system for creating an augmented reality experience in connection with a stored value token
Hybrid powertrain and method for controlling a hybrid powertrain
Delivery method for internet protocol television (IPTV)
Timing synchronization and channel estimation at a transition between local and wide area waveforms using a designated TDM pilot
Active radiation curable ink composition for inkjet recording, printed matter, method of manufacturing printed matter, molded article of printed matter, and method of manufacturing molded arti
  Randomly Featured Patents
Drill attachment
Low smoke modified polypropylene insulation compositions
Method for coaxial breast biopsy
Method, system and computer-usable medium for tracking and recording modifications to a software solution
Pump impeller
Temperature-compensated dispensing of compressed gases
Oil and oil invert emulsion drilling fluids with improved anti-settling properties
Seat reclining mechanism and shift lever interlock system
Percussion case
Method for producing 2,3-dimethyl-2,3-dinitrobutane and product thereby