Ultrasonic probe and ultrasonic diagnostic device

1. An ultrasonic probe comprising:

a group of transducer elements two-dimensionally arranged and constituting a main array that is divided into a plurality of sub-arrays; and

a plurality of electronic circuits arranged corresponding to an arrangement of the transducer elements constituting the sub-array, wherein

at least one of the electronic circuits is a first electronic circuit having a first function,

at least one of the electronic circuits is a second electronic circuit having a second function different from the first function, and

the second electronic circuit is arranged for each one of the sub-arrays, the second electronic circuit being opposed to a transducer element, among the transducer elements, which does not transmit and receive ultrasonic waves, and the second electronic circuit being arranged so as to be included in an area of the transducer element, wherein

the second electronic circuit is arranged corresponding to a transducer element positioned at substantially a center of the sub-array.

2. The ultrasonic probe according to claim 1 , wherein

the group of transducer elements is arranged in a grid, and

the electronic circuits are arranged in a grid, each of the electronic circuits corresponding to one of the transducer elements constituting the sub-array.

3. The ultrasonic probe according to claim 1 , wherein the first electronic circuit has, as at least part of the first function, a function of performing delay processing on a drive signal for driving the transducer elements and outputting the drive signal.

4. The ultrasonic probe according to claim 1 , wherein the first electronic circuit has, as at least part of the first function, a function of performing predetermined processing on an echo signal generated by the transducer elements and outputting the echo signal.

5. The ultrasonic probe according to claim 4 , wherein the predetermined processing includes delay processing on the echo signal.

6. The ultrasonic probe according to claim 1 , wherein the second electronic circuit has, as at least part of the second function, a function of performing processing on a signal output from the first electronic circuit.

7. The ultrasonic probe according to claim 6 , wherein the processing on the signal output from the first electronic circuit includes addition processing using the signal output from the first electronic circuit.

8. The ultrasonic probe according to claim 1 , wherein the second electronic circuit has, as at least part of the second function, an input function for the first electronic circuit.

9. The ultrasonic probe according to claim 8 , wherein the input function includes a control function of controlling the first electronic circuit.

10. The ultrasonic probe according to claim 9 , wherein the control function includes a register function of holding control data for the first electronic circuit.

11. The ultrasonic probe according to claim 9 , wherein the control function includes a function of controlling a delay amount of a drive signal for driving the transducer elements.

12. The ultrasonic probe according to claim 9 , wherein the control function includes a function of controlling amplitude of a drive signal for driving the transducer elements.

13. The ultrasonic probe according to claim 9 , wherein the control function includes a gain control function of dynamically controlling a gain of the first electronic circuit.

14. The ultrasonic probe according to claim 1 , wherein the sub-array is constituted of the transducer elements arranged in a grid of M×N (each of M and N is an odd number).

15. The ultrasonic probe according to claim 1 , wherein the sub-array is constituted of the transducer elements arranged in a grid of N×N (N is an odd number).

16. The ultrasonic probe according to claim 1 , wherein, among the transducer elements, a transducer element corresponding to the arrangement of the first electronic circuit is connected to the corresponding first electronic circuit, and the transducer element opposed to the arrangement of the second electronic circuit is grounded instead of being connected to the first electronic circuit.

17. The ultrasonic probe according to claim 1 , wherein

the electronic circuits are arranged as a layer of circuits disposed in a grid having M×N areas, the first and second electronic circuits each being contained in one of the areas and being opposed to one of the transducer elements.

18. An ultrasonic diagnostic device comprising:

image generation circuitry configured to generate an ultrasonic image based on an output from an ultrasonic probe, the ultrasonic probe including a group of transducer elements two-dimensionally arranged and constituting a main array that is divided into a plurality of sub-arrays and a plurality of electronic circuits arranged corresponding to an arrangement of the transducer elements constituting the sub-array, at least one of the electronic circuits being a first electronic circuit having a first function, at least one of the electronic circuits being a second electronic circuit having a second function different from the first function, and the second electronic circuit being arranged for each one of the sub-arrays, the second electronic circuit being opposed to a transducer element, among the transducer elements, which does not transmit and receive ultrasonic waves, and the second electronic circuit being arranged so as to be included in an area of the transducer element; and

control circuitry configured to cause a display to display the ultrasonic image, wherein

the second electronic circuit is arranged corresponding to a transducer element positioned at substantially a center of the sub-array.

19. The ultrasonic diagnosis device according to claim 18 , wherein the electronic circuits are arranged as a layer of circuits disposed in a grid having M×N areas, the first and second electronic circuits each being contained in one of the areas and being opposed to one of the transducer elements.