Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – Nonlinear amplifying circuit
Patent
1996-05-24
1998-11-24
Tran, Toan
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
Nonlinear amplifying circuit
327355, G06G 712
Patent
active
058413162
ABSTRACT:
An analog signal processing circuit is disclosed in this invention. The analog signal processes performed by the circuit of this invention involve mathematical operations of summation, subtraction, multiplication, division, automatic control and different types of filtering operations. Furthermore, a plurality of single-stage circuits may be interconnected to carry out combination of analog signal processing functions according to the methods and circuit configuration provided in this invention. The analog signal processing processes are performed by the analog signal processing circuit through the balance of currents by combining the basic circuit elements of current mirrors, voltage control signal amplifiers, and current sources and sinks. The circuits developed for carrying out these analog signal-processing steps can also be implemented for optical location tracking systems. Complex analog analysis and AGC functions can be defined by a systematic procedure using current balance conditions of voltage controlled current sources by combining single stage circuits according to the method and circuit configuration of this invention. This approach improves speed and accuracy of the optical location tracking systems, while reducing their cost dramatically. The present invention provides flexibility to support many types of optical and electronic devices. Applying the analog processing circuits disclosed in this invention, new and improved optical location tracking devices are developed.
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