Acoustic wave receiving apparatus and control method thereof
AssigneeCanon Kabushiki Kaisha
InventorsTakeshi Yamamoto, Mitsuo Nishimura
Life of this patent
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Abstract
An acoustic wave receiving apparatus is used, which includes: a holding member; a reception transducer array; a liquid vessel to which the reception transducer array is fixed and configured to store an acoustic matching liquid; a liquid supplying unit; a controlling unit configured to control a supplying rate of the acoustic matching liquid; and a scanning unit, wherein the controlling unit is configured to reduce the supply of the acoustic matching liquid into the liquid vessel when the reception transducer array detects an acoustic wave.
Claims42
An acoustic wave receiving apparatus comprising:
- a sheet-shaped holding member configured to hold an object on one surface and to cause an acoustic wave propagated from the object to propagate to an opposite surface, the opposite surface being opposite to the one surface;
- a reception transducer array including a plurality of receiving elements configured to receive an acoustic wave propagated from the object via the holding member and to convert the acoustic wave into an electrical signal;
- a liquid vessel to which the reception transducer array is fixed and configured to store an acoustic matching liquid so that the object and the reception transducer array are acoustically coupled to each other;
- a liquid supplying unit configured to supply the acoustic matching liquid to the inside of the liquid vessel;
- a controlling unit configured to control a supplying rate of the acoustic matching liquid to be supplied into the liquid vessel;
- a scanning unit configured to change relative positions of the receiving elements and the liquid vessel with respect to the object;
- and
- an information generating unit configured to generate characteristic information on the object using the electrical signal,
- wherein the liquid supplying unit is configured to be controlled by the controlling unit so that the supplying rate for a first period of time when the reception transducer array is open to receive the acoustic wave is lower than that for a second period of time when the reception transducer array is not open to receive the acoustic wave.
A control method of an acoustic wave receiving apparatus including a reception transducer array provided with a plurality of receiving elements, a liquid vessel, and a liquid supplying unit supplying an acoustic matching liquid to the liquid vessel,
- the control method comprising:
- receiving an acoustic wave propagating from an object via a holding member and converting the acoustic wave into an electrical signal;
- supplying the acoustic matching liquid into the liquid vessel;
- controlling a supplying rate of the acoustic matching liquid to be supplied into the liquid vessel;
- and
- generating characteristic information on the object using the electrical signal,
- wherein the controlling is performed such that the supplying rate for a first period of time when the transducer array is open to receive the acoustic wave is lower than that for second period of time when the transducer array is not open to receive the acoustic wave.
An acoustic wave receiving apparatus comprising:
- a transducer array configured to receive an acoustic wave propagated from an object and to convert the acoustic wave into an electrical signal;
- a vessel configured to store an acoustic matching liquid;
- a supplying unit configured to supply the acoustic matching liquid in a supplying rate to the inside of the vessel;
- a scanning unit configured to change relative position of the transducer array with respect to the object;
- and
- an information generating unit configured to generate characteristic information on the object using the electrical signal,
- wherein the supplying rate in a first period of time when the relative position is to be changed is lower than that in a second period of time when the relative position is not to be changed.
Dependencies are inferred from the claim text.