Biosensor with improved reading resolution

1. A method for improving a reading resolution of a biosensor, comprising:

providing a specimen on a chip of a biosensor, wherein the chip generates a peak voltage in response to a specific component of the specimen;

selecting a voltage-time discharge curve corresponding to the peak voltage in accordance with a mapping table of peak voltage versus voltage-time discharge curve;

using a voltage V 0 of a sampling time t 0 of the voltage-time discharge curve as a central voltage, and selecting a plurality of respective voltages whose sampling times are close to the sampling time t 0 , thereby obtaining an average voltage of the central voltage V 0 and the plurality of respective voltages to serve as an output voltage corresponding to the sampling time t 0 ;

obtaining an average voltage corresponding to each sampling time of the voltage-time discharge curve before the time of discharge ending to serve as an output voltage of each sampling time based on the former step;

converting the output voltage for each sampling time of the voltage-time discharge curve into a set of binary digital signals; and

determining a reading of a concentration of the specific component in accordance with the sets of binary digital signals before the time of discharge ending.

2. The method of claim 1 , wherein the voltage for each sampling time of the voltage-time discharge curve is an integer.

3. The method of claim 1 , wherein the plurality of respective voltages comprises three voltages V 1 , V 2 , and V 3 close to the central voltage V 0 in the voltage-time discharge curve.

4. The method of claim 3 , wherein the three voltages V 1 , V 2 , and V 3 comprise two voltages prior to the central voltage V 0 and one voltage behind the central voltage V 0 in the voltage-time discharge curve.

5. The method of claim 3 , wherein the three voltages V 1 , V 2 , and V 3 comprise one voltage prior to the central voltage V 0 and two voltages behind the central voltage V 0 in the voltage-time discharge curve.

6. The method of claim 3 , wherein the three voltages V 1 , V 2 , and V 3 are prior to the central voltage V 0 in the voltage-time discharge curve.

7. The method of claim 3 , wherein the three voltages V 1 , V 2 , and V 3 are behind the central voltage V 0 in the voltage-time discharge curve.

8. The method of claim 1 , wherein the specific component to be determined depends on an enzyme of the chip.

9. The method of claim 1 , wherein the sampling interval is in the range of milliseconds.

10. The method of claim 1 , wherein the sampling time is in the range of microseconds.

11. An apparatus for improving a reading resolution of a biosensor, comprising:

means for providing a specimen on a chip of a biosensor, wherein the chip generates a peak voltage in response to a specific component of the specimen;

means for selecting a voltage-time discharge curve corresponding to the peak voltage in accordance with a mapping table of peak voltage versus voltage-time discharge curve;

means for using a voltage V 0 of a sampling time t 0 of the voltage-time discharge curve as a central voltage, and selecting a plurality of respective voltages whose sampling times are close to the sampling time t 0 , thereby obtaining an average voltage of the central voltage V 0 and the plurality of respective voltages to serve as an output voltage corresponding to the sampling time t 0 ;

means for obtaining an average voltage corresponding to each sampling time of the voltage-time discharge curve before the time of discharge ending to serve as an output voltage of each sampling time based on the former step;

means for converting the output voltage for each sampling time of the voltage-time discharge curve into a set of binary digital signals; and

means for determining a reading of a concentration of the specific component in accordance with the sets of binary digital signals before the time of discharge ending.

12. The apparatus of claim 11 , wherein the voltage for each sampling time of the voltage-time discharge curve is an integer.

13. The apparatus of claim 11 , wherein the plurality of respective voltages comprises three voltages V 1 , V 2 , and V 3 close to the central voltage V 0 in the voltage-time discharge curve.

14. The apparatus of claim 13 , wherein the three voltages V 1 , V 2 , and V 3 comprise two voltages prior to the central voltage V 0 and one voltage behind the central voltage V 0 in the voltage-time discharge curve.

15. The apparatus of claim 13 , wherein the three voltages V 1 , V 2 , and V 3 comprise one voltage prior to the central voltage V 0 and two voltages behind the central voltage V 0 in the voltage-time discharge curve.

16. The apparatus of claim 13 , wherein the three voltages V 1 , V 2 , and V 3 are prior to the central voltage V 0 in the voltage-time discharge curve.

17. The apparatus of claim 13 , wherein the three voltages V 1 , V 2 , and V 3 are behind the central voltage V 0 in the voltage-time discharge curve.

18. The apparatus of claim 11 , wherein the specific component to be determined depends on an enzyme of the chip.

19. The apparatus of claim 11 , wherein the sampling interval is in the range of milliseconds.

20. The apparatus of claim 11 , wherein the sampling time is in the range of microseconds.