Ramey & Schwaller wishes to congratulate its client Arx Pax Labs on issuance of U.S. Patent Number 10,313,165 titled FINITE IMPULSE RESPONSE ANALOG RECEIVE FILTER WITH AMPLIFIER-BASED DELAY CHAIN on June 4, 2019. High-data rate channel interface modules and equalization methods employing a finite impulse response (FIR) analog receive filter. Embodiments include an illustrative channel interface module having multiple amplifier-based delay units arranged in a sequential chain to convert an analog input signal into a set of increasingly-delayed analog signals that are weighted and combined together with the analog input signal to form an equalized signal; and a symbol decision element operating on the equalized signal to obtain a sequence of symbol decisions. An interface that extracts received data from the sequence of symbol decisions. The delay units may employ one or more delay cells each having a common-source amplifier stage followed by a source follower output stage, the two stages providing approximately equal portions of the propagation delay. An enhanced gate-to-drain capacitance in the common-source amplifier may increase propagation delay while reducing bandwidth limitations.
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Ramey & Schwaller wishes to congratulate its client Credo Technology Group, Ltd. on issuance of U.S. Patent Number 10,212,260 titled SERDES ARCHITECTURE WITH HIDDEN BACKCHANNEL PROTOCOL issued on February 19, 2019. The patent relates to An illustrative multi-lane communication method implements a hidden backchannel to communicate equalization information and/or other link-related data without impinging on the user bandwidth allocated by the relevant articles of IEEE Std 802.3.
Ramey & Schwaller is a full-service intellectual property law firm working with an international client base from our Houston, Texas office. We are dedicated to enhancing clients results through efficient practice management, innovative technologies and the use of skilled professionals.