Alcatel

J&uuml;rgen Otterbach

Hardy Halbauer

J&uuml;rgen Enssle

A master clock signal generated at the center ( ) of a bidirectional point-to-multipoint network is transmitted in the form of time stamps in an MPEG-2 data format over the downstream channel of the network to a plurality of transmitting/receiving facilities ( ). Each transmitting/receiving facility ( ) derives the clock signal for the upstream channel from the master clock signal and a local clock signal generated by a reference clock ( ). The center ( ) compares the clock signal from each transmitting/receiving facility with the master clock signal and derives from the result of this comparison digital phase correction information individual to each transmitting/receiving facility ( ), which it transmits to the respective transmitting/receiving facility ( ) in the MPEG-2 data stream. The respective transmitting/receiving facility ( ) uses the phase correction information to control the clock signal for the upstream channel in a numerically controlled oscillator ( ).

Growing community of inventors

Stuttgart, Germany

Jürgen Otterbach

Growing community of inventors

Stuttgart, Germany

J&uuml;rgen Otterbach

Jürgen Otterbach