Method for fast recovery of timing and device produced according to this method

摘要

Method for fast recovery of timing and device produced according to this method. The recovery of timing in a receiver receiving data in packets is achieved by means of a tuned circuit 15, 16 which receives the pulses of transitions and whose oscillations are transmitted to a comparator 3 which provides the timing information. To prevent the phenomena which bring about loss of timing information and which are favoured by the high value of the quality factor of the tuned circuit, the method according to the invention consists in lowering this quality factor during the time interval between two consecutive packets and in restoring it linearly to its nominal value from the start of reception of the following packet. Producing a device according to this method consists in connecting up across the terminals of the tuned circuit 15, 16 a fixed damping resistor 28 in series with a variable damping resistor stationed at the output of a damping control circuit 4 whose input receives a control pulse generated at the end of reception of each packet. Application to the reception of data transmitted in packets. <IMAGE>