2 results about "Calibration function" patented technology

The invention relates to a currency counting and detecting machine technology, in particular to a currency counting and detecting machine with the automatic brightness calibration function. In the prior art, the defects that image quality of a currency counting and detecting machine is unstable, a user cannot conveniently use the currency counting and detecting machine, and the maintenance cost is high exist. According to the currency counting and detecting machine with the automatic brightness calibration function, a control circuit comprises a digital signal processing chip DSP, an FPGA, multi-channel enhancement type field-effect transistors, programmable digital potentiometers and an AD conversion chip, wherein the digital signal processing chip DSP and the FPGA are connected through an EMIF, the multi-channel enhancement type field-effect transistors are connected with a general I/O port of the FPGA, the programmable digital potentiometers are connected between the multi-channel enhancement type field-effect transistors and a CIS in series, the input end of the AD conversion chip is connected with the signal output end of the CIS, and the output end of the AD conversion chip is connected with the FPGA through the general I/O port. The currency counting and detecting machine with the automatic brightness calibration function has the advantages that image quality of the currency counting and detecting machine is improved, the maintenance cost is reduced, and operation and use are convenient.

A pressure calibration function calculation method, applicable to a touch panel which sequentially comprises a first electrode layer, an elastic dielectric layer and a second electrode layer, the first electrode layer includes multiple first electrodes in parallel to a first axis, the second electrode layer includes multiple second electrodes in parallel to a second axis, the pressure calibration function calculating method comprising: when standard testing pressure is applied to one or more calibrating points corresponding to one or more vertex of multiple calibration areas of the touch panel, respectively, gathering a pressure sensing value of each of the calibrating points by utilizing mutual capacitance sensing between the multiple first electrodes and the multiple second electrodes; and calculating a pressure calibration function corresponding to each of the calibration areas according to a coordinate, the standard testing pressure and the pressure sensing value of each of the calibration areas.