Bit-rate independent optical receiver and method thereof
July 20, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesCircuit arrangement for clock pulse recovery at the receiving end of digital clock-controlled data transmission systems Frequency-independent, self-clocking encoding technique and apparatus for digital communications System for jointly transmitting high-frequency and low-frequency digital signals over a fiber-optical carrier Clock decoder and data bit transition detector for fiber optic work station Method for the transmission of data between two stations by means of optical waveguides Photonic cross-connect switch Optical system for transmitting a multilevel signal Bit rate-insensitive mechanism for transmitting integrated clock and data signals over digital communication link Phase lock loop circuit using a sample and hold switch circuit Frequency doubler for an optical transceiver clock recovery circuit InventorsAssigneeApplicationNo. 09621009 filed on 07/20/2000US Classes:398/208, Including postcompensation398/202, RECEIVER398/155, Clock recovery398/136, Including compensation398/158, Including compensation398/161, Using delay327/165, Regenerating or restoring rectangular (e.g., clock, etc.) or pulse waveform375/359, Self-synchronizing signal (self-clocking codes, etc.)375/376, Phase locked loop375/354SYNCHRONIZERSExaminersPrimary: Chan, JasonAssistant: Curs, Nathan Attorney, Agent or FirmForeign Patent References
International ClassesH04B 10/00H04B 10/06 H03K 5/01 AbstractA bit-rate independent optical receiver and a method thereof. In the bit-rate independent optical receiver, an optoelectric converter converts an input optical signal to an original electrical signal, a bit rate identifying unit forms a resultant signal by performing an exclusive-OR (XOR) logic operation on the original electrical signal received from the optoelectric converter and a second signal corresponding to the original electrical signal delayed by a predetermined quantity of time, and detects a bit rate from the resultant signal, a reference clock generator generates a reference clock signal according to the detected bit rate, and a clock and data recovery circuit recovers a clock signal and data from the input signal according to the reference clock signal.Other References
Field of SearchIncluding synchronizationClock recovery Including optical waveguide Including polarization Having feedback Amplitude Heterodyne Intermodulation Having feedback Homodyne Specific optical elements Feedback Including postcompensation Including optical element (e.g., lens, mirror, etc.) RECEIVER Including compensation Including compensation Using delay Regenerating or restoring rectangular (e.g., clock, etc.) or pulse waveform | |
