Chip module, signal processing method, and electronic equipment
The present technology relates to a chip module, a signal processing method, and electronic equipment that are aimed at enabling a change before and after mounting a module to be debugged and enabling a mounting module to be easily designed. A gyro module includes a MEMS that is formed into a chip and an IC that processes a detection signal from the MEMS, which are arranged above and below. The IC has a temperature sensor and stress sensor that detect an external environment within the IC in plurality and outputs difference values obtained by subtracting reference sensor values that are sensor values of the temperature sensors and the stress sensors at the time of calibration from sensor values detected by a plurality of the temperature sensors and the stress sensors respectively. The present technology can be applied, for example, to the gyro module or the like.
1. A chip module, comprising:
a sensor; and
a signal processing IC, wherein
the sensor is on the signal processing IC, and
the signal processing IC is configured to:
process a detection signal from the sensor, wherein
the signal processing IC has a plurality of external environment sensors, and
each of the plurality of external environment sensors is configured to detect a sensor value of an external environment;
obtain, for each of the plurality of external environment sensors, a difference value based on subtraction of a reference sensor value associated with a respective sensor of the plurality of external environment sensors from the detected sensor value of the respective sensor of the plurality of the external environment sensors, wherein the reference sensor value for each of the plurality of external environment sensors corresponds to the sensor value of the external environment at a time of calibration; and
output the difference value for each of the plurality of external environment sensors.
2. The chip module according to claim 1 , wherein the plurality of external environment sensors is in an even arrangement in a planar direction.
3. The chip module according to claim 1 , wherein the plurality of external environment sensors corresponds to a plural kind of sensors.
4. The chip module according to claim 1 , wherein the plurality of external environment sensors includes a stress sensor.
5. The chip module according to claim 1 , wherein the plurality of external environment sensors includes a temperature sensor.
6. The chip module according to claim 1 , wherein the plurality of external environment sensors includes a plurality of transistors.
7. The chip module according to claim 1 , wherein the calibration includes adjustment of an offset of a module output.
8. The chip module according to claim 1 , wherein the calibration includes adjustment of a gain of a module output.
9. The chip module according to claim 1 , wherein
the signal processing IC further includes a one-time programmable read only memory (OTP),
the signal processing IC is further configured to store stores the reference sensor value of each of the plurality of external environment sensors at the time of the calibration in the OTP, and
obtain the difference value based on the subtraction of the reference sensor value stored in the OTP from the sensor value of the respective sensor of the plurality of external environment sensors.
10. A signal processing method, comprising:
in a chip module that includes a sensor and a signal processing IC:
processing, by the signal processing IC, a detection signal from the sensor, wherein
the sensor is on the signal processing IC, and
the signal processing IC has a plurality of external environment sensors;
detecting, by each of the plurality of external environment sensors, a sensor value of an external environment; and
obtaining, by the signal processing IC for each of the plurality of external environment sensors, a difference value based on subtraction of a reference sensor value associated with a respective sensor of the plurality of external environment sensors from the detected sensor value of the respective sensor of the a plurality of the external environment sensors, wherein the reference sensor value for each of the plurality of external environment sensors corresponds to the sensor value of the external environment at a time of calibration; and
outputting, by the signal processing IC, the difference value for each of the plurality of external environment sensors.
11. Electronic equipment, comprising:
a chip module that includes:
a sensor; and
a signal processing IC, wherein
the sensor is on the signal processing IC, and
the signal processing IC is configured to:
process a detection signal from the sensor, wherein
the signal processing IC has a plurality of external environment sensors, and
each of the plurality of external environment sensors is configured to detect a sensor value of that dctccts an external environment;
obtain, for each of the plurality of external environment sensors, a difference value based on subtraction of a reference sensor value associated with a respective sensor of the plurality of external environment sensors from the detected sensor value of the respective sensor of the a plurality of the external environment sensors, wherein the reference sensor value for each of the plurality of external environment sensors corresponds to the sensor value of the external environment at a time of calibration; and
output the difference value for each of the plurality of external environment sensors.