Resources Contact Us Home
DC balance compensation for AC-coupled circuits

Image Number 2 for United States Patent #7620121.

A receiver has a first input port and a second input port both coupled to a differential amplifier through first and second input capacitors. A bias circuit coupled to the core side of the first input capacitor and to the core side of the second input capacitor is configured to provide a selected voltage to at least one of the first input and the second input of the differential amplifier. In one embodiment, a common mode bias circuit provides a common mode voltage to both inputs of a differential amplifier. In a particular embodiment, a run length detector monitors the output of the differential amplifier and provides a run length feedback signal or an average bit density feedback signal to the set the selected voltage between periods of data reception.

  Recently Added Patents
Permutational memory cells
Method for fabricating solar cell
Methods and systems for assessing sales activity of a merchant
Method and system for routing telephony communications together with modified calling party identifier information
Apparatus and method for adapted deblocking filtering strength
Tab visibility
Pixel structure of a solid-state image sensor employing a charge sorting method
  Randomly Featured Patents
Vacuum insulation panel
Printed circuit board and differential signaling structure
Liquid crystal display temperature measuring in adhesion material
Motor vehicle starter contactor incorporating an auxiliary control relay
Method and apparatus for discharging spools
Diagnostic report search supporting apparatus and diagnostic report searching apparatus
Door frame or similar article
Dyes and dye-donor elements for use in thermal dye sublimation transfer
Sound processing unit, sound processing system, audio output unit and display device
One-piece fitted sheet and mattress pad