Resources Contact Us Home
Signal amplifier circuit and optical receiver

Image Number 14 for United States Patent #7952427.

A signal amplifier circuit includes peak value holding circuit 11 receiving positive-phase input signal, peak value holding circuit 12 receiving negative-phase input signal, adder 13 adding the positive-phase input signal and output signal of peak value holding circuit 12, adder 14 adding the negative-phase input signal and output signal of the peak value holding circuit 11, non-inverting amplifier 15 amplifying output signal of adder 13, non-inverting amplifier 16 amplifying output signal of adder 14, peak value holding circuit 21 receiving positive-phase output signal of non-inverting amplifier 15, peak value holding circuit 22 receiving negative-phase output signal of non-inverting amplifier 16, adder 23 adding the positive-phase output signal and output signal of peak value holding circuit 22, adder 24 adding the negative-phase output signal and output signal of peak value holding circuit 21, and differential amplifier 29 amplifying difference between output signals of adders 23 and 24. Error in discrimination for small-amplitude signal embedded in tail is reduced.

  Recently Added Patents
Method for manufacturing a magnet coil configuration using a slit band-shaped conductor
Media identification system with fingerprint database balanced according to search loads
Squib control circuit
Handover signaling in wireless networks
Selected alert delivery in a distributed processing system
Methods for isolating ligands of the human bitter taste receptor TAS2R49
Isolated nucleic acid molecule encoding an antibody that reduces GDF-8 activity
  Randomly Featured Patents
Dielectric well logging means and method utilizing the signals from a pair of receivers for providing clock pulses corresponding to earth formation dielectric constant
Process for the manufacture of quinone derivatives
In vivo production and delivery of erythropoietin
Method and apparatus for material deposition in semiconductor fabrication
Natural-scale tone-generator apparatus for MIDI musical keyboards
Spiro-piperidine compounds and medicinal use thereof
Fluorosilicone polymer and curable fluorosilicone polymer composition
Inspection apparatus for defects on patterns
Blend partner with natural rubber for elastomeric compounds
Method for manufacturing solar battery