To provide units for making a calculation circuit for calculating a CMP method at high speed into a small circuit at a low cost.
An object information acquiring apparatus includes: a plurality of receiving elements which receive acoustic waves emitted from an object and convert the acoustic waves into received signals; a phase delay unit which matches phases of the received signals; a complex converter which converts the received signals output from the phase delay unit into complex signals; a complex correlation matrix calculator which periodically obtains a complex correlation matrix by using a complex signal group configured from a plurality of phase-matched complex signals; an eliminator which eliminates the number of bits of input data configured from at least either the complex signal group or matrix elements included in the complex correlation matrix; and an electric power calculator which calculates a power of target positions based on the complex correlation matrix, wherein the eliminator eliminates the number of bits by performing common level conversion processing on all input data relating to one complex correlation matrix.
| JP2002172115A | 2002-06-18 | |||
| JPH05224888A | 1993-09-03 | |||
| JP2008026912A | 2008-02-07 | |||
| JP2010200926A | 2010-09-16 | |||
| JP2005160977A | 2005-06-23 | |||
| JP2011005237A | 2011-01-13 | |||
| JPH01269315A | 1989-10-26 |
Yoshiyuki Kawaguchi
Mayuko Wakuda
Koichiro Sakai
Takeshi Nakamura
Takeshi Niwa