Abstract:
Systems and methods are disclosed to provide static and/or dynamic phase adjustments to a data signal relative to a clock signal. For example, the data signal may be delayed by a coarse delay and/or a fine delay to match the timing of the clock signal independently for each input path (e.g., per input pad). The delay may be as a function of positive and/or negative clock edges.
Abstract:
Procédé et équipement pour la transmission de données sur une fibre optique comportant une étape de multiplexage en longueur d'onde des signaux provenant d'une pluralité d'émetteurs monochromes présentant chacun une longueur d'onde propre et une étape de modulation par l'information à transmettre d'une porteuse réalisée par canal, caractérisé en ce que le cadencement de chacun desdits émetteurs est piloté par une horloge commune.Elle se rapporte en outre à un circuit de contreréaction pour un équipement de transmission de données sur une fibre optique caractérisé en ce qu'il génère un marqueur fréquentiel pour injecter un signal spectral perturbateur d'un émetteur, et comporte un moyen de détection du signal de sortie d'une porte pour agir sur un moyen d'asservissement de la phase de l'émetteur pour obtenir la transformation spectrale désirée de chaque marqueur.
Abstract:
A source synchronous interface determines an amount of delay for an incoming data signal and a phase offset for a latch device that latches the incoming data signal. A delay locked loop may be a dual loop delay locked loop, in which case, the loops may use a low jitter, local clock signal and an input clock signal that was transmitted with the data signal. The low jitter, local clock signal may provide a stable source from which to derive good clock signal edge transitions. The input clock signal may be used to determine the long term clock signal drift. A finite state machine within the dual loop delay locked loop may provide the necessary information for the amount of delay and the phase offset. The delay of the incoming data signal is produced by an analog or digital delay line.
Abstract:
A method to skew or deskew a plurality of optical channels in a multichannel optical cable which includes the steps of determining an optical pulse transmission time in at least at first channel and a second channel of the multichannel optical cable. A relative pulse delay between the first channel and the second channel of the multi-channel optical cable is calculated. Delay optics with the appropriate relative pulse delay are serially optically connected to at least one of the channels to one of skew or deskew the first channel relative to the second channel.
Abstract:
Local source data is first sampled (20) at an original sampling rate and the resampled (30) at first sampling rate which is equal to the framing rate for transmitting said data to the remote source. The resampled local source data is then delayed (40) by the transmission time (36) between the local and remote data sources. The data from the remote relay which is resampled (48) at the remote source at the first resampling rate (48) and the delayed resampled data (42) at the local source are both then resampled (46) at a second resampling rate, at an original sampling rate, to produce aligned data at the local source.
Abstract:
A method of processing a digital radio broadcast signal in a digital radio receiver includes: receiving baseband signal samples at a first sample rate; adjusting the sample rate of the baseband signals based on a difference between a receiver clock and a transmitter clock to produce adjusted baseband signal samples at a second sample rate; filtering the adjusted baseband signal samples to separate a digital component of the samples and an analog component of the samples, wherein the digital component and the analog component are synchronous; and separately demodulating the digital component and the analog component to produce a digital output signal and an analog output signal. A receiver that uses the method is also provided.
Abstract:
The present invention pertains to a method for configuring an infrared audio transmission system comprising a signal generator and a plurality of radiators connected to said signal generator, the method comprising at at least one of said plurality of radiators: receiving (1050) a delay compensation configuration message; and storing (1060) an amount of delay to be introduced into subsequently radiated signals in accordance with the received delay compensation configuration message. The invention also pertains to a configuration node (100) for configuring radiators in such a system, configured to: transmit (1010) at least one test signal to the radiators; detect (1020) events triggered by the test signal; determine (1030) respective transmission delays between the node and the radiators on the basis of these reflections; and transmit (1040) a delay compensation configuration message over said network, the delays being included in the delay compensation configuration message.
Abstract:
전송 매체(Transport medium)를 통해서 다른 통신 노드와 브랜치 연결되는 노드 유닛으로서, 상기 브랜치 연결되는 상위단의 인접 노드 유닛으로 딜레이 측정을 위한 테스트 신호를 상기 전송 매체를 통해 전송하고, 상기 테스트 신호가 상기 상위단의 인접 노드 유닛을 거쳐 루프 백(loop back)되어 되돌아온 루프 백 신호를 검출하여 상기 상위단의 인접 노드 간의 상위단 전송 딜레이를 측정하는 딜레이 측정부; 상기 브랜치 연결되는 하위단의 인접 노드 유닛이 존재하는 경우, 상기 하위단의 인접 노드 유닛으로부터 전달된 하위단 전송 딜레이를 수신하고, 상기 상위단 전송 딜레이와 상기 하위단 전송 딜레이를 합산한 합산 전송 딜레이를 계산하는 딜레이 합산부; 및 상기 합산 전송 딜레이를 상기 상위단의 인접 노드 유닛으로 전송하는 제어부를 포함하는, 노드 유닛이 제공된다.
Abstract:
A receiver includes a first receiving circuit that receives a first data including a first symbol transmitted using three signals over a first data lane, the first data lane including three signal lines respectively corresponding to the three signals. The first receiving circuit includes a delay adjustment circuit configured to adjust a delay amount of at least one of the three signals.